Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/50650
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Campo DC | Valor | Idioma |
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dc.contributor.author | Dias, Rosana Maria Alves | por |
dc.contributor.author | Alves, Filipe Manuel Serra | por |
dc.contributor.author | Costa, Margaret | por |
dc.contributor.author | Fonseca, Helder | por |
dc.contributor.author | Cabral, Jorge | por |
dc.contributor.author | Gaspar, João | por |
dc.contributor.author | Rocha, Luís Alexandre Machado | por |
dc.date.accessioned | 2018-02-19T14:48:24Z | - |
dc.date.issued | 2015-12 | - |
dc.identifier.issn | 1057-7157 | por |
dc.identifier.uri | https://hdl.handle.net/1822/50650 | - |
dc.description.abstract | An accelerometer based on the electrostatic pull-in time of a microstructure is presented in this paper. The device uses a parallel-plate overdamped microstructure, and real-time control operation is performed using a field programmable gate array and high precision digital-to-analog converters. Both open-loop and closed-loop measurements are presented. The low noise is a key feature of this approach, which is limited only by the mechanical-thermal noise of the microstructure used, 2 mu g/root Hz as shown in the open-loop results (3 mu g/root Hz in closed-loop operation). The time readout method has extremely high-resolution capabilities. The pull-in time sensitivity can be adjusted up to 1.6 mu s/mu g, and the electrostatic feedback voltage sensitivity is 61.3 V-2/g. The closed-loop control allows operation of the accelerometer in a much larger range than in openloop (+/- 500 mg have been achieved) and the linearity is greatly improved (<1% FS). The current closed-loop control algorithm allows operation up to 2 Hz. A bias stability of 50 mu g has been measured over 45 h in open loop and 250 mu g in closed loop. [2015-0074] | por |
dc.description.sponsorship | This work was supported in part by the European Commission under Grant PCOFUND-GA-2012-600375, and in part by the Portuguese Foundation for Science and Technology under Grant SFRH/BD/90172/2012. | por |
dc.language.iso | eng | por |
dc.publisher | IEEE | por |
dc.relation | info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F90172%2F2012/PT | por |
dc.rights | restrictedAccess | por |
dc.subject | Pull-in time accelerometer | por |
dc.subject | Electrostatic feedback control | por |
dc.title | Real-time operation and characterization of a high-performance time-based accelerometer | por |
dc.type | article | - |
dc.peerreviewed | yes | por |
oaire.citationStartPage | 1703 | por |
oaire.citationEndPage | 1711 | por |
oaire.citationIssue | 6 | por |
oaire.citationVolume | 24 | por |
dc.date.updated | 2018-02-07T12:10:43Z | - |
dc.identifier.doi | 10.1109/JMEMS.2015.2487686 | por |
dc.description.publicationversion | info:eu-repo/semantics/publishedVersion | por |
dc.subject.wos | Science & Technology | - |
sdum.export.identifier | 2582 | - |
sdum.journal | Journal of Microelectromechanical Systems | por |
Aparece nas coleções: | DEI - Artigos em revistas internacionais |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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JMEMS_RD.pdf Acesso restrito! | 4,04 MB | Adobe PDF | Ver/Abrir |